Improvement in lamps



E. T. VCOVELL. Lamp.

Patented Feb.' 18,' 1862.

NITED STATES FFICE.

PATENT IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent N 0. 34,408, dated February18, 1862.

To all whom it may concern:

Be it known that I, EDWARD T. OovELL, of New Bedford, in the county ofBristol and State of Massachusetts, have invented a new and ImprovedOil-Lamp5 and I do hereby declare that the following is a' full andexact description thereof, reference being had to the accompanyingdrawings, which form a portion of this specification.

Figure 1 of said drawings is a side view of my improved lamp; Fig. 2, asection of the same; and the remaining drawings represent the variousoperative parts of said lamp detached.

Similar letters indicate the same parts in each of the drawings.

The body of my improved lamp, the spirallygrooved air-tube g, whichrises centrally within the same, the cap e, which closes the opening inthe body of the lamp, and the longitudinally-slitted casing-tube f,which is combined with and descends from the said cap 6, the thimble Z,and the wick m, which is connected to said thimble, are all clearlyrepresented in the drawings, and need not dilfer, essentially, in eithershape or arrangement from the corresponding parts in the wellknown solarlamp, or other lamps of a similar character.

My improved lamp differs from all other lamps which employ tubularwicksin this, viz: First, the deflector d, which is placed over the wick m,has an oblong slit formed in it for the passage of the flame, whichenables my lamp to produce a flat flame from a round or tubular wick;second, the perforated thimble a, which is surmounted by the slitteddeflector d, and which supports the lamp glass n, is connected by meansof the radial arms 0 c with an inner band 17, which embraces theprojecting upper end of the casing-tube f so loosely that it can befreely turned upon the same, and consequently should a smoky flame atany time be produced by an unequal elevation of a portion of the top ofthe wick immediately under the slit in the deflector the said smokyflame can be prevented by par tially turning the said thimble upon thetube f, or to such an extent as to bring the said unequally-elevatedportion of the wick immediately beneath either side of the deflector d,where the intensity of the heat evolved will produce a perfectcombustion; third, when a slitted deflector is placed over a flameproduced from the combustion of oil and a tubular wick I flnd itadvantageous to admit not over one-fourth of the quantity of air intothe interior of said Wick that is admitted into the interior of thisdescription of wicks which are not surmounted by a slitted deflector.

By passing the flame from a tubular wick through a slitted deflector andby allowing a smaller quantity of air than usual to pass through thesaid tubular wick a more perfect combustion of the oil is produced, andthe flame resulting from said combustion is stronger and more brilliantthan has ever before been produced from an oil-lamp.

Having thus fully described my improved I lamp, what I claim therein asmy invention, and desire to secure by Letters Patent, is

1. Placing the slitted deflector d over the Wick-tubes g and f, for thepurpose of enabling my said lamp to produce a flat flame from a tubularWick, substantially as represented in the accompanying drawings; butthis I only claim when air is permitted to flow through the space withinthe wick-tube g, for the purpose of aiding in the production of a moreperfect combustion than has ever before been produced in an oil-lamp.

2. When a slitted deflector is placed over the tubular wick of a lamp,supporting the said deflector in such a manner that it can be turned toany desired position independently of the wick-tubes of said lamp,substantially as herein set forth.

EDWARD T. OOVELL.

